x+1/x^2=root 2 then find value of x^3 +1/x^3 experts plsn answer i have my exam tmr Share with your friends Share 0 Vijay Kumar Gupta answered this It is given that, x+1x=2We need to find the value of x3+1x3Use the algebraic formula. a+b3=a3+b3+3aba+bThis gives, a3+b3=a+b3-3aba+bTake a= x and b=1x to get, x3+1x3=x+1x3 +3x1x x+1x =23 +31 2 =22+32 =52 0 View Full Answer